I actually used that configuration as example and also resources from Ubuntu website https://help.ubuntu.com/community/IptablesHowTo
All the port for Zimbra are appended in the firewall configuration
But some packets are dropped and from syslog I can see iptables denied entries
I was wandering if someone perhpas has been using ip tables on their system and have some advices....

I actually used that configuration as example and also resources from Ubuntu website https://help.ubuntu.com/community/IptablesHowTo
All the port for Zimbra are appended in the firewall configuration
But some packets are dropped and from syslog I can see iptables denied entries
I was wandering if someone perhpas has been using ip tables on their system and have some advices....

It's not advisable to run iptables on your Zimbra server though you should have Zimbra behind a firewall.